Depending on the ZL1 pricing I may find myself following what Pete is up to. I would love the see that 'Ring time.
Picking some parts from the above I think you could make your own corner carver for less than a ZL1. Figure a nice SS for about $35k, add $10k in mods, save $10k from a ZL1. I know what a Pedderised G8 can do (amazing), maybe one of these days I'll be in a Pederised SS.

I'm here to tell ya... I reeeeaaalllly want my wife to get a G8 when we trade in the Tahoe...